* Fix bugs for installing docker, bug #1237581. -The change in install_docker.sh corrects a typo ('=' should be '-'). This typo resutls in 'unable to locate the packet' error when executing apt-get.
* Fix bugs for installing docker, bug #1237581. -The change in install_docker.sh corrects a typo ('=' should be '-'). This typo resutls in 'unable to locate the packet' error when executing apt-get.